Percolating and concentrating apparatus



J. U. LLOYD.

PERCOLIING AND CO'NCENIRAIING APPARATUS.

APPLICATION FILED JUNE 5. 191B.

Paltnted May. i), 192() Unirse sfrafrns PATENT camion Jenn Uni LLOYD,'or cINciNNa'ri, onio.

PERCOLATING AND CAONCENTRTING' APPARATUS.

v Specification of Letters latent.

Patented Mar. 9, 19750,

appiicanfm inea June s, wie. anni No. 238,577.

- ing and Concentrating Apparatus, of which the following is aspecification.

An object of my invention is to produce an improved percolating andconcentratin appai'atus which is particularly designer for themanufacture. of pharmaceutical preparations and which in its operationwill prevent the precipitation otresinous materials as well as assurethe proper alcoholic strength of the product.

This and other objects are attained in the apparatus described in thefollowing specification and illustrated in the accompanying drawing inWhich my improved apparatus is shown in somewhat diagrammatic sectionalelevation.

The apparatus illustrated as an embodiment of my invention, consists ofa percolator A, a concentrator B, and a condenserl C, lWhich areconnected with piping to be hereinafter described, At the bottom ofpercolator A a pipe l is located, which is connected also with theconcentrator B at its bottom. In the top of the concentrator a vaporpipe 2 is located, .which leads to condenser C, he lower end oi which isconnected with the top of percolator A by means of a pipe 3. ln additionto these pipe connections l" have provided a pipe 4 at the top of thepercolator and a pipe 5 at the bottoni of the percolator for purposes tobe hereinafter more fully described, a pipe' 6 also being provided inthe bottom of the percolator for cleaning purposes. pipe 7 is locatedinthe bottom of the concentrator for emptying it.

The interior of the percolator is provided with screens 8 and. 9, theformer beingprovided' tor the even distribution of alcohol flowing frompipe 3, over the drug located in the percolator, and the latter forsupporting the drugvalcove the bottom and away from pipe 1. Y

Coneentrator B is provided `with a series of jackets 10, 11, and 1Qthrough which steam or water may be passed tor evaporating and coolingthe extract in the concentrator during the concentrating operation.Pipes 13 and 14 are provided and may be used for admitting anddischarging steam the percolator.

' from each of the jackets, pipes 15 and 16 being provided *for* theadmission and dis charge of water if desired, or vice versa.,

Londense/r C is of usual form, a water 'casing 17 having a condensingcoil 18, being shown, with water admission and discharge pipes 19 and Q0attached tothe casing.

In the use of my improved apparatus the drug to be extracted is placedin the percolater upon the screen 9 and the proper quantity ofmenstruuni is introduced into the percolator with the drug, cock D beingclosed. Aftei' the drug has been steeped the desired length of time,valve D is opened' and the extract flows into concentrator B. $team isadmitted to one or lmore of the Jackets 10, 11 and 12, cold Water beingintroduced'into the jacket beneath the steam heated jacket. The alcoholin the menstruum entering the concentrato'ris thus distilled from thesurface and seii't through pipe 2 into the condenser, from Which it Howsthrough pipe 3 and back through the drug in the' percolator, thuscarrying with it additional extract matter from thedrug in thepercolator, to the conceiitrator. This o operation co y the requiredstrength or until there vcan be no more extract derived from the drug inAAn advantage of connecting the bottom o percolator A with the bottom ofthe concentrator is thatthe precipitation of any resinoiis substances inthe extract in the concentrator is avoided because of the continuesuntil the extract is of tinual agitation of the extract, created by theintroduction of the menstruum from the percolator at the bottom of theconcentrator. y

The-contents of concentrator y1? may. be reduced tothe required strengthlby the passage of steam through theone oi the jackets which is locatedat the top of the liquid in the concentrator, Water being passed throughthe next lower jacket to maintain all but the evaporatingy surface cool,if desired. Thusa large or afsmall quantity of extract may be evaporatedand reduced to.

the required strength or bulk.

After the drug has been completely ex tracted the valve in pipe 7 isopened to empty the apparatus. lihe valve in pipe 1 is then closed andsteam islpassed through pipe- -5 and allowed te pass od through pipe 4'which maybe connected with 'a comI denserl to recover the alcohol,

iie

%., `created by placing the percolator higher' l have shown thepercolator and. the con centrator upon the saine level, with pipohorizontal. rlhis produces a moderately rapid flow of menstruuin throughthe apparatus as when drugs of moderately linely divided condition areto he subjected to the menstruum. Should drugs of very finely dividedcondition be placed in the porcolator, the circulation may he much morerapid. This increase in rapidity may he than the concentrator. Coarselydividend drugs necessitate slower circulation and for this purpose thepercolator is placed lower than the concentrator.

Having thus described my invention',

lwhat claim is; I

1.`A percolating and concentrating apparatos, comprising a percolator, aconcentrator, a pipe connecting the percolator and concentrator at theirbottoms, and means for creating a circulation of inenstruum, through thepipe from the percolator to the concentra'tor.

l 2. A percolating and concentrating apparatus comprising a percolator,a concentrator, a pipe connecting the percolator and conoent-rator attheir bottoms, means for creating a circulation of menstrnuin throughvthe pipe from the percolator to the comen marinos trator, and a seriesoi? jackets surrounding the 'concentrator, adapt/ed to receive steam orWater.

3. percolating, concentrating and condensing apparatus comprisingv aypercolator, a conccntrator, a pipe connecting the percolatorconcentrator at their bottoms, a condenser., n pipe connecting the upperends of the conccntrator and the condenser, and a pipe connecting thelower end of the con denser and upper end of the pcrcolator.

il. A percolating, co1-1ccntra'ting and con lensing apparatus,comprising a percolator, a concentrator, a pipe connecting thepercolator and concentrator at their bottomse a condenser, a pipoconnecting the upper ends of the concentrator and the condenser, a pipeconnecting the lower end of the condenser and the upper end of thepercolator, and a series of jackets surrounding the conc/entrator,adapted to receive either steam or Water.

In testimony whereof, l have hereunto subscribed my naine this 49th dayof June, 1918.

JHN @El LLYD.

Witnesses:

l/inmnn l?. MURRAY, W. frionnfrom

